FORT WAYNE, Ind — The neighbor who was babysitting a 9-year-old Indiana girl when she went missing last week will be formally charged with murder today.

Authorities said Monday night that Aliahna Lemmon had been found dead and Mike Plumadore, who was watching Aliahna and her two sisters when she went missing Friday, was being held on a murder charge. He and Aliahna’s family lived in the same mobile home park in Fort Wayne.

“He was a trusted family friend,” Aliahna’s step-grandfather, David Story, said late Monday, saying he was surprised by the arrest.

Plumadore, 39, is scheduled to appear in court this morning.

Allen County Sheriff Ken Fries said Plumadore told investigators on Monday where the girl’s body could be found.

“It did come to a horrible conclusion,” Fries said. “We have somebody in custody now who can pay the price for it.”

Investigators said Aliahna’s body was found in the northeastern Indiana county, but no details were released.